Thread-unwinder.



No.764,235. l PATENTED JULY 5, 1904. W. H. GOULD.

THREAD UNWINDER.

APPLICATION FILED JAN. 6, 1904.

a V E c a Iv v 5 NW 9 a n A n UNITED STATES Patented July 5, 1904.

PATENT Orricn.

THREAD-UNWINDER.

SPECIFICATION forming part of Letters Patent No. 764,235, dated July 5, 1904.

Application filed January 6, 1904;. Serial No. 187,959. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM H. GOULD, a citizen of the United States, residing at Newton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Thread-Unwinders, of which the following is a specification.

My invention relates to supports for cops, and moreespecially for cops intended to be used in connection with sewing-machines and of a character to contain a larger body of thread than can be supported upon an ordinary spool and where the thread can be removed by drawing it endwise from the stationary cop; and my invention consists of a holder adapted to receive a cop having a base provided with means for securing it in position upon the post of a sewing-machine extending transversely of the base, as set forth hereinafter and as illustrated in the accompanying drawings, in which- Figure 1 is a side view of my improved holder with a cop thereon; Fig. 2, an elevation showing the same applied to the arm of a sewing-machine; Fig. 3, a longitudinal section of the holder as made from a block or solid piece;

Fig. l, a transverse section through the base of the holder Fig. 3; Figs. 5 and 6, views illustrating different forms of retaining springs; Fig. 7, a longitudinal section of a holder formed of metal; Fig. 8, a transverse section of the holder Fig. 7 arranged upon a post of a sewing-machine; Fig. 9, a view similar to Fig. 8 with the retaining-spring arranged externally on the holder; Fig. 10, a view showing a holder for a taper cop.

The cop-holder A comprises a base (6 and a stem 7), the latter being preferably hollow and of a diameter to readily receive a cop 0, cylindrical or tapering, which preferably is of a character that can be unwound without rotating that is, the thread can be removed by drawing it off in a direction longitudinal to the axis of the cop-and when the stem is hollow it should be longer than the cop, so that the thread can pass without undue friction from the end of the cop into the end of the stem and then back through the stem and through the base. A

One of the chief applications of a holder of this character is to the vertical post of a sewing-machine, and to permit the holder to be readily applied to and removed from and firmly held upon said post I provide the base with a transverse socket (Z, preferably tangential to the channel v? of the stem, but as close to the latter possible, and this socket receives the post y, the holder being mounted thereon, as illustrated in Fig. 2, with the base of the holder nearest the head of the sewingmachlne, toward which the thread is conducted after passing from the holder. In order to retain the holder securely in position upon the post without interfering with its ready application and removal, I make use of a retaining-spring. While the spring may be of any suitable construction and arrangement, I have shown it in Figs. 2, 3, and i in connection with a holder of wood or composition as inserted in the socket (Z. The form of spring thus shown is a flat strip bow-shaped except at one end 3', where it is curved and terminates in a sharp lip f. The curved end facilitates the pushing of the spring into the socket to the position shown in Fig. 4, when the lip f will engage the side of the socket and tend to prevent the withdrawal of the sprin The stem 6 of the spring is of such curvature as to nearly extend across the spring-cavity, so that it will exert aforeible pressure against the post which will force the said. curve back flat against the side of the socket and retain the holder in position with posts of different sizes.

In Fig. 6 I illustrate a spring having three bent lingers connected with a ring which may be inserted in the socket, and a spring of rubber or any other material may be used.

In Figs. 7, 8, and 9 a metallic holder is illus trated where the base and stem are drawn or otherwise suitably formed in one piece, and the socket is formed by making an opening in the flange of the base at one side, indenting the flange at the opposite side, as shown in Fig.

opening transverse to the stem, and a retaining-spring arranged within said opening having an arched stem and curved at the end and provided with a terminal lip, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of tWo subscribing Witnesses.

WILLIAM H. GOULD.

Witnesses:

J. DUKE SMITH, AMAsA (J. GOULD. 

